Killing, in the sense, your soul becomes completely destroyed and you become a particle of nature. We Shinigamis retain some of our memories as humans, our souls just transcend into Shinigami bodies and we're responsible for purifying evil spirits. I know they're evil because I, as a Shinigami can sense extreme emotions, emotions like love and hatred, and evil too. This ghost is stuck in this plane, because it was killed brutally and it's last rites were not conducted. Do you guys want to go ahead or should I purify the spirit?